Closure cap



G. RAMSEY CLOSURE GAP V Aug. 30,1927.

Filed March 25, '1924 4 INVENTOR Patented Aug. 30, 1927.

UNITED STATES GEORGE RAMSEY, OF BROOKLYN, NEW

1,640,962 PATENT" OFFICE.

YORK, ASSIGNOR TO ANCHOR CAP AND CLOSURE CORPORATION, OF LONG ISLANDCITY, NEW YORK, A CORPORATION OI NEW YORK.

CLOSURE CAP.

Application filed March 25, 1924. seriaino. 701,868.

The present invention relates broadly to closures and more especially toa. friction cap adapted for use on glass containers and the like.

Various types of friction caps in use heretofore in the art havecomprised devices made of sheet metal and the like wherein the frictionelements were produced by displacing portions of the skirt of the cap toprovide inwardly projecting friction members. In some cases the frictionmembers comprised a continuous internal bead; in other cases thefriction members were interrupted projections extending inwardly. In thecase of the inwardly projecting bead the range of variation .in sizes ofglasses to be sealed was quite small and after the cap was once removedit was stretched so that the cap became substantially ineffective as are-seal. In the case of inwardly formed projections the material in theskirt of the cap was usually stretched in applying the cap so that whenthe cap was removed the material therein was also so stretched that uthe cap became ineffective for re-sealing. Th present inventionovercomes the difficult es of the known prior art by providing afriction seal in which the skirt of the cap is constructed to provide ayielding constricting gripping portion which is springy in character andwhich may be removed and applied to containers a number of times withoutseriously affecting the effectiveness of the gripping action to form aseal. The cover portion of the ca is provided with an annular groovepositioned a short distance from its edge; and corrugations extend fromthis groove outwardly to the edge of the cover portion and downwardly tothe bottom of the skirt. The corrugations in the zone between theannular groove I and the edge ofthe cover port-ion permit this zone toexpand circumferentiallv. thereby enabling the annular groove to yieldradially and allow the upper portion of the skirt to be displaced as awhole radially outward when the cap is applied to a suitable container.The corrugations in the skirt proper permit it to expand to a diameterwhich is considerably greater than its normal diameter. This ability ofthe upper edge of the skirt to move bodily outward when the cap is aplied to a container is a feature which particularly adapts the cap foruse upon grades of were in which the heretofore been practicable 'toseal efiectively.

Another object of the present invention is a closure cap having thecrown portion thereof constructed to yield radially and the skirtportion thereof constructed to yield circumferentially.

Another object of the present invention is a closure cap having acircumferential groove in the crown thereof and radial grooves extendingfrom said circumferential groove outwardly and into the skirt of thecap. t"?

A still further object of the present invention is a closure cap havinga substantially fiat cover portion with a circumferential bead adjacentthe extremities of the cover portion and with outwardly and downward-vly extending ribs which lead from said bead to the lower edge of theskirt of the cap and with a sustaining member arranged in the skirt ofthe cap.

Other and further objects of the present invention will in part beobvious and will in part be pointed out hereinafter by reference to theaccompanying drawings in which like parts are represented, by likecharacters throughout the several figures thereof.

It isrealized that the present invention may be embodied inconstructions other than those herein specifically disclosed,

therefore it is desired that the disclosure herewith shall be consideredas illustrative 10 and not in the limiting sense.

Figure 1 illustrates a cap in accordance with the present inventionseated upon a suitable container to form a sealed package.-

Figure 2 is a detail sectional view through 10 the upper part of Figure1.

Figure 3 is an enlarged detail sectional view of one sideof the canon acontainer. Figure 4 is a plan view of the cap.

Figure 5 a detail sectional view of a smaller sized cap shown with agasket inside of the cap.

Referring now more especially to the drawings, the cap A comprises acover portion 1 provided with a circumferentlal groove 2 which is in theouter portion of the cover part and curved member 4 extending from said.groove 2 outwardly and downwardly in the form-of a distorted ogee curvewhich terminates in awire edge5 in which the free edge of th'emetalofthe ca s turned inward to prevent rusting an at the same time to forma substantially 1nelastic fulcrum member against which the curvedmembers 4- may act. members 4 are formed by curved corrugations whichextend from the groove 2 to the wire edge 5. These corrugations areelastic or stretchable at substantially right angles to the length ofthe corrugations, therefore, while the members 4 are reinforced in aradial direction and act substantially as levers, these members form aart of the skirt of the cap, which is elastic in a circumferentialdirection.

When the cap is forced over a suitable container B of glass or the like,the corrugated zone in the cover portion which lies between the edge ofthe cover portion and the annular groove 2 expands or iscircumferentially enlarged thereby permitting the annular groove 2 to'act as a radial ex ansion zone and permit the upper edge 0 the skirtproper to move bodily outwardly. The corrugations in the skirt permit itto expand to give it any necessary increased circumference. Thisconstruction which permits the upper edge of the skirt to move bodilyoutward allows the cap to be applied even though the container should beconsiderably oversize. The action of the constricting force of the skirtdue to its own resiliency combines with the resilient force of theannular expansion zone in the cover portion, which urges this upperportion of the skirt to its normal position with respect to the centerof the cover portion, to hold the cap securely on the container.

Figure 5 illustrates a slight variation in the embodimentof theinvention and shows the cap as applied to the neck of a catsup bottle,or the like, in which the interior of the cap is provided with a gasket.9 adapted to be seated against the end of the container. The side wallof the container as at 10 is undercut slightly soas to permit the cap toslightly under-lock with the u per portion of the container having a bea11 thereon to securely hold the 'cap in position. An annular protectinghead 12 may be provided on the side wall of the container to form aconvenient means by which the cap may be forced from the container binserting a coin or suitable tool at 14 between The curved the beadand'the wire edge of the cap, and prying the cap off the end of thecontalner. From the foregoing it will appear that the present inventionprovides a secure friction cover cap which may be sealed-and unsealed anumber of times without injury either to the container or the cap.

Having thus described my invention,

what I claim is 1. A closure comprising a cover portlon,

' and a skirt depending from said cover portion, said skirt beingcorrugated to permit circumferential expanslon, and said cover portionbeing provided with an annular expansion zone to permit the top of theskirt to move radially as a whole with respect to said cover portionwhen the closure is applied to a suitable container.

2..A c1osure comprising a substantial] circular cover portion, and askirt depen ing from said cover portion, means in said skirt to permitcircumferential expansion of said skirt, and said cover portion beingprovided with an annular expansion zone to permit the top of the skirtto move radially as a whole with respect to said cover portion when theclosure is applied to a suitable container.

3. A closure comprising a cover portion,

and a skirt depending from said cover portion, said skirt beingcorrugated to permit circumferential expansion, and expansion means insaid cover portion to permit the top of the skirt to move radially withrespect to said cover portion when the 010- sure is applied to asuitable container.

4. A closure comprising a cover portion, a skirt depending from saidcover portion, said skirt being corrugated to permit circumferentialexpansion and said cover portion being provided with an annularexpansion zone to permit the top of the skirt to move radially withrespect to said cover portion when the closure is applied to a suitablecontainer. and means to prevent the expansion ofthe lower edge of theskirt.

5. A closure comprising asubstantially circular cover portion, and askirt depending from said cover portion, said skirt and the outer edgeof the top being corrugated to permit circumferential expansion, andsaid cover portion being provided with an annular groove contiguous tosaid corrugations to permit the upper part of the skirt to move radiallywith respect to the remainder ofsaid cover portion when the closure isapplied to a suitable container.

6. A closure comprising a cover portion, and a skirt depending from saidcover portion, said skirt and the outer'edge of the.

part of the skirt to move-radially with re-: .1 I

, of the skirt against expanding.

7. A closure comprising a cover portion,

. and a skirt depending from said cover pertion and having across-section comprising an ogee curve, said skirt being corrugated topermit circumferential expans on. and said cover portion being providedwith at least one annular corrugation and corrugations extendingoutwardly therefrom to permit a part of the skirt to move radially withrespect to said cover portion when the closure is applied to a suitablecontainer.

8. A closure comprising a substantially circular cover portion. and askirt depending from said cover portion and having a cross-sectioncomprising an ogee. curve. said skirt being corrugated to permitcircumferential expansion. and said cover portion being provided with atleast one annular groove to permit a part of the skirt to move radiallywith respect to-said' cover portion when the closure isapplied to asuitable container. said corrugations extending into the outer wall ofsaid groove.

9. A closure comprising a cover portion and a skirt depending from saidcover portion, said skirt being corrugated to permit circumferentialexpansion. and said cover portion being provided with an annularexpansion zone to permit part of the skirt to move radially with respectto said cover portion when the closure is applied to a suitablecontainer. and a gasket adapted to form a seal when the closureisapplied to a receptacle.

10. A closure comprising a cover portion and a skirt adapted to embracethe side Wall of a receptacle adjacent the mouth thereof, said skirthaving expansion zones to permit it to embrace a receptacle larger thanthe normal size of the skirt, and an expansion zone contained in saidcover portion to permit the outer periphery of said cover portion tomove perpendicularly with respect to the side wall of a receptacle whenthe closure is applied to the receptacle.

11. A closure comprising a cover portion. and a skirt adapted to embracethe side wall of a receptacle adjacent the mouththereof. said skirthaving expansion zones to permit it to embrace a receptacle larger thanthe normal size'of the skirt, and an expansion zone contained in saidcover portion to permit the upper extremity of said cover portion tomove perpendicularly with respect to the side wall of a receptacle towhich the closure is applied, and means in the form of 8. rolled edge toprevent expansion of the lower edge of the, skirt.

12. A closure comprising a cover portion and a skirt adapted to embracethe side wall of a receptacle adjacent the mouth thereof, said skirtbeing corrugated to permit it to embrace a receptacle larger than thenormal size of the skirt, .and an expansion zone contained in said coverportion to permit the extremity of said cover portion to' moveperpendicularly wit-h respect to the side wall of a receptacle to whichthe closure is applied.

13. A closure comprising a cover portion and a skirt adapted to embracethe side wall of a receptacle adjacent the month thereof, said skirthaving expansion zones to permit it to embrace a receptaclelarger thanthe normal size of the skirt, and an expansion zone contained in saidcover portion to permit the extremity of said cover portion to moveperpendicularly with respect to the side wall of a receptacle to whichthe closure is applied, and a gasket adapted to form an end seal whenthe closure is applied to a receptacle.

14. A package comprising a container closed by a cap comprising: a coverportion covering the mouth of the container; a skirt depending 'fromsaid cover portion and em-- bracing the contained adjacent the mouththereof, said skirt being stressed and exerting a constricting force onthe container wall and the upper portion of the skirt being radiallydisplaced as a whole from its normal position with respect to the centerof the cover ortion.

' 15. A pac age comprising a container closed by a cap comprising: acover portion covering the mouth of the container; a skirt embracing thecontainer adjacent its mouth, the upper portion of the skirt beingdisplaced as a whole 'from its normal'position' with respect to thecenter of the cover por-' tion; and non-expanding means holding thelower edge of said skirt in its normal posi: tion with respect to thecenter of the cover portion.

.16. A package comprising a container closed by a cap comprising: acover portion covering the mouth of the container; a skirt embracing thecontainer adjacent its mouth, the upper portion of the skirt beingdisplaced as a whole from its normal position with respect to the centerofthe cover portion; means included in said cover por-- tion to urgesaid skirt toward its normal position with respect to the center of thecover portion; and non-expanding m ans holding the lower edge of theskirt in its normal position with respectto the center of the coverportion.

GEORGE RAMSEY.

